H2Os in human body

We all know that our bodies are made up 70% of water, we had mentioned this last week in class when we were learning hydrogen bond. “I'm dying of thirst!"Well. We just might. It sounds so simple. H20. Two parts hydrogen, one part oxygen. But this element, better known as water, is the most essential, next to air, to our survival. Water truly is everywhere, still most take it for granted.Water helps nearly every part of the human body function efficiently.Most of the human body is made up of H2O, with cells consisting of 65-90% water by weight.Therefore, it isn't surprising that most of a human body's mass is oxygen. Carbon, the basic unit for organic molecules, comes in second. 99% of the mass of the human body is made up of just six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Brain is 75% water, moderate dehydration can cause headaches and dizziness. Even when you breath, it also requires water。Our health is truly dependent on the quality and quantity of the water we drink. It contributed to and even produces pain and many degenerative diseases that can be prevented and treated by increasing water intake on a regular basis. But sometime, drink too much water can also be a bad thing. Drinking too much water in a short period of time can cause a medical condition that's known as "Water Intoxication" or "Water Poisoning." This condition can be fatal. We wanna to live healthy, and drinking clean water can be a important role in it.